What is correct from this traffic sign onwards?

This traffic sign is a general prohibition sign in Germany, meaning that all motorized vehicles are prohibited from entering.

Regarding motorized bicycles, this rule means you cannot ride or drive on with your motorized bicycle beyond this sign. However, you are allowed to push your motorized bicycle past this point on foot.

Therefore, only pushing the motorized bicycle is permitted beyond the sign; riding or moving it with the engine on or off is not allowed.

This rule helps prevent motorized traffic in certain zones, such as pedestrian areas or restricted streets, while still allowing bicycle owners to move their vehicle without riding it.